See my directions (link above). Loosen 1 side, then remove nuts from opposite side, lift with a jack (lifting points in the above instructions) and install the lift blocks and longer bolts. Lower and loosely install the nuts then repeat the lift on the opposite side, finally lower and tighten all the fasteners.

Leaving the bolts in place with nuts in place provides a "hinge point" for the body to pivot on, but the bolts keep it from slipping sideways off the mounts.